Urethra
Notes
C680 Urethra
**Note 1:** The following sources were used in the development of this schema
* SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998) (https://seer.cancer.gov/archive/manuals/EOD10Dig.3rd.pdf)
* SEER Summary Staging Manual-2000: Codes and Coding Instructions (https://seer.cancer.gov/tools/ssm/)
* Collaborative Stage Data Collection System, version 02.05: https://cancerstaging.org/cstage/Pages/default.aspx
* Chapter 63 *Urethra*, in the AJCC Cancer Staging Manual, Eighth Edition (2017) published by Springer International Publishing. Used with permission of the American College of Surgeons, Chicago, Illinois.
**Note 2:** *Schema Discriminator 1: Urethra/Prostatic Urethra* is used to discriminate between Urethra and Prostatic Urethra which are coded to ICD-O-3 code C680